More than just a TV companion book, Grimm: Aunt Marie's Book of Lore is, well, Aunt Marie's book of lore from the show. Just like the book that Nick consults to learn about his Grimm ancestry, Book of Lore is filled with sketches and handwritten notes about hexenbiests, jagerbars, blutbaden, ziegevolk, and more. The only difference is that instead of an enormous leatherbound volume on parchment paper, this book is a trade paperback, printed on regular paper with a parchment background.